阅读说明：本技术 一种动密封传动装置 (Dynamic seal transmission device ) 是由 邓志诚 吕超 张晓晴 姚毅 于 2020-12-30 设计创作，主要内容包括：本发明公开一种动密封传动装置,涉及传动部件密封技术领域,包括传动输入组件、传动输出组件、主动磁场控制组件和不导磁密封组件；传动输入组件包括传动输入轴和永磁体,传动输入轴转动安装于传动输入壳体内,传动输入轴端部安装有永磁体；传动输出组件包括传动输出轴,传动输出轴转动安装于传动输出壳体内；传动输入壳体与传动输出壳体通过不导磁密封组件密封连接；传动输入轴和传动输出轴上均安装有旋转变压器,旋转变压器与磁场控制器连接；磁场线圈安装于传动输出轴端部,导电滑环安装于传动输出轴上,并与磁场线圈连接；导电滑环上安装有碳刷,碳刷与磁场控制器连接。本发明可以实现扭矩的同步传递,并设置最大传递力矩,实现过载保护。(The invention discloses a dynamic seal transmission device, which relates to the technical field of transmission part sealing and comprises a transmission input assembly, a transmission output assembly, an active magnetic field control assembly and a non-magnetic conductive sealing assembly; the transmission input assembly comprises a transmission input shaft and a permanent magnet, the transmission input shaft is rotatably arranged in the transmission input shell, and the permanent magnet is arranged at the end part of the transmission input shaft; the transmission output assembly comprises a transmission output shaft, and the transmission output shaft is rotatably arranged in the transmission output shell; the transmission input shell is hermetically connected with the transmission output shell through a non-magnetic conductive sealing component; rotary transformers are mounted on the transmission input shaft and the transmission output shaft and connected with the magnetic field controller; the magnetic field coil is arranged at the end part of the transmission output shaft, and the conductive slip ring is arranged on the transmission output shaft and is connected with the magnetic field coil; and the conductive slip ring is provided with a carbon brush which is connected with the magnetic field controller. The invention can realize the synchronous transmission of torque, and set the maximum transmission torque to realize overload protection.)

1. A dynamic seal transmission device is characterized in that: the magnetic field control device comprises a transmission input assembly, a transmission output assembly, an active magnetic field control assembly and a non-magnetic sealing assembly; the transmission input assembly is arranged in the transmission input shell, the transmission output assembly is arranged in the transmission output shell, and the transmission input shell and the transmission output shell are in sealing connection through the non-magnetic conductive sealing assembly; the transmission input assembly comprises a transmission input shaft and a permanent magnet, the transmission input shaft is rotatably arranged in the transmission input shell, and the permanent magnet is arranged at one end, close to the transmission output shell, of the transmission input shaft; the transmission output assembly comprises a transmission output shaft, and the transmission output shaft is rotatably arranged in the transmission output shell; the active magnetic field control assembly comprises a magnetic field coil, a conductive slip ring, a rotary transformer, a magnetic field controller and a carbon brush; the rotary transformer is arranged on the transmission input shaft and the transmission output shaft and connected with the magnetic field controller; the magnetic field coil is arranged at one end, close to the transmission input shell, of the transmission output shaft, and the conductive slip ring is arranged on the transmission output shaft and connected with the magnetic field coil; the conductive slip ring is provided with the carbon brush, and the carbon brush is connected with the magnetic field controller.

2. The dynamic seal transmission of claim 1, wherein: the transmission input shaft is rotatably mounted in the transmission input housing through a first bearing.

3. The dynamic seal transmission of claim 1, wherein: the transmission output shaft is rotatably arranged in the transmission output shell through a second bearing.

4. The dynamic seal transmission of claim 1, wherein: one end of the transmission input shaft, which is close to the transmission output shell, is provided with a permanent magnet fixing disc, and a plurality of permanent magnets are uniformly distributed on the permanent magnet fixing disc in the circumferential direction; the sections of the permanent magnets are all fan-shaped, and the circle centers of the permanent magnets are the same.

5. The dynamic seal transmission of claim 4, wherein: and a magnetic field coil fixing disc is arranged at one end of the transmission output shaft, which is close to the transmission input shell, a plurality of magnetic field coils are correspondingly arranged on the magnetic field coil fixing disc, and the number of the magnetic field coils corresponds to that of the permanent magnets.

6. The dynamic seal transmission of claim 1, wherein: and the transmission output shaft is provided with three conductive slip rings from top to bottom.

7. The dynamic seal transmission of claim 1, wherein: the non-magnetically conductive seal assembly includes a non-magnetic seal disk mounted between the drive input housing and the drive output housing.

8. The dynamic seal transmission of claim 7, wherein: the outer edge of the non-magnetic sealing disk is connected with the transmission input housing and the transmission output housing by fixing bolts.

9. The dynamic seal transmission of claim 8, wherein: and rubber sealing rings are arranged at the joints of the fixing bolts, the transmission input shell and the transmission output shell.

Technical Field

The invention relates to the technical field of transmission part sealing, in particular to a dynamic sealing transmission device.

Background

When high-pressure and low-pressure environmental experiments are carried out on the load characteristics of mechanical rotary power output equipment, an environment simulation box is required to simulate a non-normal-pressure test environment. However, the device for applying a torque load to the device under test must be placed in a normal environment due to its performance, that is, the mechanical rotary power output device under test and the load device need to be placed in and out of the environmental simulation chamber, respectively. In this case, the device under test has a pressure difference with the environment in which the load is located, and it is necessary to seal the transmission member.

As shown in fig. 1, a conventional sealing method uses a movable member (a transmission shaft 500) to externally embed a sealing material 700. Since the rotating member shaft 500 is in direct contact with the sealing material 700, friction occurs between the two, causing the sealing material 700 to generate heat, deform, or even fall off, which affects the service life of the device. In addition, the resistive torque due to friction also affects the measurement of the torque of the load 800.

The invention patent (patent No. 201310422344) proposes a transmission device using permanent magnet coupling to realize torque transmission, and the method uses permanent magnets to realize torque transmission between an inner flange and an outer flange. However, the torque transmission by the permanent magnet has a relationship with the magnetic field strength and the phase difference, so that the asynchronous rotation between the input shaft and the output shaft occurs, and the phase difference also exists during the forward rotation and the reverse rotation, which is not suitable for being applied to an environmental test with high requirements on measurement results. In addition, the magnetic fields at the input and output shaft ends can not be adjusted, and the extreme value of the transmitted torque exists, so that the transmitted maximum torque is inconvenient to adjust.

Therefore, a dynamic seal transmission device is needed to solve the above problems in the prior art.

Disclosure of Invention

The invention aims to provide a dynamic seal transmission device, which solves the problems in the prior art, can realize synchronous transmission of torque, and can realize overload protection by setting the maximum transmission torque.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a dynamic seal transmission device, which comprises a transmission input component, a transmission output component, an active magnetic field control component and a non-magnetic conductive seal component, wherein the transmission input component is connected with the transmission output component; the transmission input assembly is arranged in the transmission input shell, the transmission output assembly is arranged in the transmission output shell, and the transmission input shell and the transmission output shell are in sealing connection through the non-magnetic conductive sealing assembly; the transmission input assembly comprises a transmission input shaft and a permanent magnet, the transmission input shaft is rotatably arranged in the transmission input shell, and the permanent magnet is arranged at one end, close to the transmission output shell, of the transmission input shaft; the transmission output assembly comprises a transmission output shaft, and the transmission output shaft is rotatably arranged in the transmission output shell; the active magnetic field control assembly comprises a magnetic field coil, a conductive slip ring, a rotary transformer, a magnetic field controller and a carbon brush; the rotary transformer is arranged on the transmission input shaft and the transmission output shaft and connected with the magnetic field controller; the magnetic field coil is arranged at one end, close to the transmission input shell, of the transmission output shaft, and the conductive slip ring is arranged on the transmission output shaft and connected with the magnetic field coil; the conductive slip ring is provided with the carbon brush, and the carbon brush is connected with the magnetic field controller.

Preferably, the transmission input shaft is rotatably mounted in the transmission input housing by a first bearing.

Preferably, the transmission output shaft is rotatably mounted in the transmission output housing through a second bearing.

Preferably, one end of the transmission input shaft, which is close to the transmission output shell, is provided with a permanent magnet fixing disc, and a plurality of permanent magnets are uniformly distributed on the permanent magnet fixing disc in the circumferential direction; the sections of the permanent magnets are all fan-shaped, and the circle centers of the permanent magnets are the same.

Preferably, a magnetic field coil fixing disc is mounted at one end, close to the transmission input shell, of the transmission output shaft, a plurality of magnetic field coils are correspondingly mounted on the magnetic field coil fixing disc, and the number of the magnetic field coils corresponds to that of the permanent magnets.

Preferably, the transmission output shaft is provided with three conductive slip rings from top to bottom.

Preferably, the non-magnetically permeable seal assembly comprises a non-magnetic sealing disc mounted between the drive input housing and the drive output housing.

Preferably, the outer edge of the non-magnetic sealing disk is connected to the drive input housing and the drive output housing by fixing bolts.

Preferably, rubber sealing rings are arranged at the joints of the fixing bolt, the transmission input shell and the transmission output shell.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention adopts a dynamic seal transmission device based on a motor principle, wherein the same fan-shaped and concentric permanent magnets are arranged on an input transmission shaft at the mechanical rotation power output equipment end, magnetic field coils with the number corresponding to that of the permanent magnets are arranged on an output transmission shaft at the load end, and a magnetic field controller controls the magnetic field coils to generate proper magnetic field intensity and direction through a carbon brush and a conductive slip ring after comparing position signals from rotary transformers on the input transmission shaft and the output transmission shaft, so that the transmission without phase difference between the transmission input shaft and the transmission output shaft is realized, and the maximum transmission torque can be flexibly adjusted through the magnetic field controller, thereby realizing the function of overload protection.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a conventional sealed transmission;

FIG. 2 is a schematic structural diagram of the dynamic seal transmission device of the present invention;

FIG. 3 is a cross-sectional view of the transmission input assembly of the present invention;

FIG. 4 is a layout view of a permanent magnet according to the present invention;

FIG. 5 is a cross-sectional view of the transmission output assembly of the present invention;

FIG. 6 is a block diagram of an active magnetic field control assembly according to the present invention;

FIG. 7 is a schematic view of the installation of the non-magnetically conductive seal assembly of the present invention;

in the figure: 100-transmission input component, 101-transmission input shaft, 102-first bearing, 103-permanent magnet, 200-transmission output component, 201-transmission output shaft, 202-second bearing, 300-active magnetic field control component, 301-magnetic field coil, 302-conductive slip ring, 303-rotary transformer, 304-magnetic field controller, 305-carbon brush, 400-non-magnetic conductive sealing component, 401-rubber sealing gasket, 402-non-magnetic sealing gasket, 403-fixing bolt, 500-transmission shaft, 501-transmission bearing, 600-environment simulation box shell, 700-sealing material, 800-load, 900-mechanical rotary power output device to be tested.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Example one

As shown in fig. 2 to 7, the present embodiment provides a dynamic seal transmission apparatus, which mainly includes a transmission input assembly 100, a transmission output assembly 200, an active magnetic field control assembly 300, and a non-magnetic conductive seal assembly 400; the transmission input assembly 100 is installed in the transmission input housing, the transmission output assembly 200 is installed in the transmission output housing, and the transmission input housing and the transmission output housing are hermetically connected through the non-magnetic conductive sealing assembly 400.

Specifically, as shown in fig. 3 and 4, the transmission input assembly 100 includes a transmission input shaft 101 and a permanent magnet 103, the transmission input shaft 101 is rotatably mounted in the transmission input housing through a first bearing 102, the first bearing 102 enables the transmission input shaft to stably rotate, the permanent magnet 103 is mounted at one end of the transmission input shaft 101 close to the transmission output housing, and the permanent magnet 103 and a magnetic field generated by the permanent magnet 103 rotate along with the rotation of the transmission input shaft 101.

As shown in fig. 5, the transmission output assembly 200 includes a transmission output shaft 201, the transmission output shaft 201 is rotatably mounted in the transmission output housing through a second bearing 202, and the structure of the transmission output assembly is substantially similar to that of the transmission input assembly 100, except that a magnetic field coil 301 of an active magnetic field control assembly 300 is mounted at an end of the transmission output shaft 201.

As shown in fig. 6, the active magnetic field control assembly 300 includes a magnetic field coil 301, a conductive slip ring 302, a resolver 303, a magnetic field controller 304, and a carbon brush 305; the transmission input shaft 101 and the transmission output shaft 201 are both provided with a rotary transformer 303, and the rotary transformer 303 is connected with a magnetic field controller 304; the magnetic field coil 301 is arranged at one end, close to the transmission input shell, of the transmission output shaft 201, and the conductive slip ring 302 is arranged on the transmission output shaft 201 and connected with the magnetic field coil 301; the conductive slip ring 302 is provided with a carbon brush 305, and the carbon brush 305 is connected with a magnetic field controller 304. The magnetic field controller 304 receives the signal of the rotary transformer 303, and controls the intensity and direction of the magnetic field generated by the magnetic field coil 301 through the carbon brush 305 and the conductive slip ring 302.

In this embodiment, a permanent magnet fixing disk is installed at one end of the transmission input shaft 101 close to the transmission output shell, and a plurality of permanent magnets 103 are uniformly distributed on the permanent magnet fixing disk in a circumferential manner; the sections of the permanent magnets 103 are all fan-shaped, and the centers of circles of the permanent magnets 103 are the same. One end of the transmission output shaft 201 close to the transmission input shell is provided with a magnetic field coil fixing disc, a plurality of magnetic field coils 301 are correspondingly arranged on the magnetic field coil fixing disc, and the number of the magnetic field coils 301 corresponds to the number of the permanent magnets 103.

In this embodiment, three conductive slip rings 302 are disposed on the transmission output shaft 201 from top to bottom.

In this embodiment, as shown in FIG. 7, the non-magnetically conductive seal assembly 400 includes a non-magnetic sealing disk 402, the non-magnetic sealing disk 402 being mounted between the transmission input housing and the transmission output housing; the non-magnetic sealing disk 402 can transmit the strength and direction of the magnetic field while performing a sealing function; the outer edge of the non-magnetic sealing disc 402 is connected with the transmission input shell and the transmission output shell through fixing bolts 403, rubber sealing rings 401 are arranged at the connection positions of the fixing bolts 403 with the transmission input shell and the transmission output shell, and the rubber sealing rings 401 are located between the non-magnetic sealing disc 402 and the transmission input shell and the transmission output shell, so that direct contact between a transmission shaft and a sealing material can be avoided.

In the invention, when the mechanical rotary power output equipment performs high-voltage and low-voltage environmental experiments, the transmission input shaft 101 of the transmission input assembly 100 rotates along with the equipment to be tested to drive the permanent magnet 103 at the end part of the transmission input shaft 101 and the magnetic field generated by the permanent magnet to rotate in the same way, the magnetic field controller 304 receives and compares signals of the rotary transformer 303 on the transmission input shaft 101 and the transmission output shaft 201, then the magnetic field coil 301 is controlled to generate a magnetic field with proper strength and direction, the transmission input shaft 101 and the transmission output shaft 201 are ensured to rotate simultaneously under the action of the magnetic field without phase difference, and the transmission output shaft 201 is connected with a load to transfer torque power, thereby achieving the effect of dynamic sealing.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.